public class LegacyAudioDevice {
    public String getNowSign() {
        return nowSign;
    }

    public void setNowSign(String nowSign) {
        this.nowSign = nowSign;
    }

    String nowSign="使用苹果lighting接口,";
    public String  playAudio() {

        System.out.println("现在是"+nowSign);
        return nowSign;
    }
}